Made a quick example to show how I combine Distress & Castaway ink.
Apply Distress ink direct to the paper with the inkpad, let dry for a moment and stamp swirls with Castaway. Now keep away from it for about 5 minutes. Put a white paper on top and start ironing with a hot iron. Take a peek now and then to see if the Castaway is reacting. After cooling stamp the flowers with black ink and trim.
It's kind of serendipity.
With the left overs from the birthday card I made some mini flower cards. Nice to use as a gift tag or as a bouquet tag.